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Posted: 4/1/2015 7:31:19 PM EDT
| How hard is it to install one of these? Have never put an AR together besides trigger group. Will be done on a short barrel 308 (10.5 inch). I either have to back off on my powder or install and adjustable gas block. Already on the low side for powder. I share this round with my 16 inch barrel 308 AR which shoots the round just fine. Or would it be better to have an expert do it? Appreciate any help. |
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It installs just like a regular gas block. The big question is how is your current block mounted? If it is set screw or clamp on I would replace it with the same. But either way it's loosen a coupl of screws, may have to tap it off, knock out the pin for te gas tube. The install tube in new block, put new block on barrel and torque to spec. You may have to put the upper in the freezer and or heat up the gas block but it's highly unlikely. Loctite is recommended for set screws.
Now once it's on you'll have to adjust. Turn the gas all the way off, insert one round in mag, chamber and fire. The rifle should short stroke. Open up adjustment 1-2 clicks or 1/4-1/2 turn depending on which block you have and repeat. Repeat until bolt holds back on empty mag. Once it does you can close it 1 click or 90 until it doesn't and then open it one. Fire 1 round at a time for 5-10 rounds and if it locks back every time your good. Some people like to open it another 1-2 clicks for reliability. |
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Quoted:
It installs just like a regular gas block. The big question is how is your current block mounted? If it is set screw or clamp on I would replace it with the same. But either way it's loosen a coupl of screws, may have to tap it off, knock out the pin for te gas tube. The install tube in new block, put new block on barrel and torque to spec. You may have to put the upper in the freezer and or heat up the gas block but it's highly unlikely. Loctite is recommended for set screws. Now once it's on you'll have to adjust. Turn the gas all the way off, insert one round in mag, chamber and fire. The rifle should short stroke. Open up adjustment 1-2 clicks or 1/4-1/2 turn depending on which block you have and repeat. Repeat until bolt holds back on empty mag. Once it does you can close it 1 click or 90 until it doesn't and then open it one. Fire 1 round at a time for 5-10 rounds and if it locks back every time your good. Some people like to open it another 1-2 clicks for reliability. This is great advise and exactly how I did it as well on my first build. Working flawlessly, good luck! |
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SLR recommends that you move the adjustment screw every 200 round or so just to make sure it does not get "frozen" in place. With a new barrel, make that every 5-10 rounds for the first 50-100 rounds or so. If there is a burr in the gas port hole, the copper being scraped off the bullets before the burr wears off can build up in the gas block and completely jam it. Ask me how I know this... :( |
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This is great advise and exactly how I did it as well on my first build. Working flawlessly, good luck! Quoted:
Quoted:
It installs just like a regular gas block. The big question is how is your current block mounted? If it is set screw or clamp on I would replace it with the same. But either way it's loosen a coupl of screws, may have to tap it off, knock out the pin for te gas tube. The install tube in new block, put new block on barrel and torque to spec. You may have to put the upper in the freezer and or heat up the gas block but it's highly unlikely. Loctite is recommended for set screws. Now once it's on you'll have to adjust. Turn the gas all the way off, insert one round in mag, chamber and fire. The rifle should short stroke. Open up adjustment 1-2 clicks or 1/4-1/2 turn depending on which block you have and repeat. Repeat until bolt holds back on empty mag. Once it does you can close it 1 click or 90 until it doesn't and then open it one. Fire 1 round at a time for 5-10 rounds and if it locks back every time your good. Some people like to open it another 1-2 clicks for reliability. This is great advise and exactly how I did it as well on my first build. Working flawlessly, good luck! Agreed, nothing to add after this post.. |
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I don't really have anything to add regarding the install...But, 10.5" 308!!! Holy Jesus that thing must be a loud flame thrower! Lol, I would love a chance to shoot it 
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Will be done on a short barrel 308 (10.5 inch). I don't really have anything to add regarding the install...But, 10.5" 308!!! Holy Jesus that thing must be a loud flame thrower! Lol, I would love a chance to shoot it
Its a blast to shoot (pun intended). Going to find someone professional to do it right the 1st time.
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